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Flying Saucer Science Experiment

It’s a bird, it’s a plane, it’s a ... flying plastic bag! With this easy science experiment, you can make a basic produce bag levitate in the air while demonstrating the fascinating properties of static electricity. The secret lies in what’s called the “propulsion and repulsion” of electrostatic charges. Using a cotton towel, you can apply negative charges to both the bag and balloon. Like two ends of a magnet with the same charge, the balloon and bag will move away from each other, causing the bag to levitate.

InstructionsUsing the scissors, cut an inch-thick strip off the top (or open end) of the produce bag. You should now have a plastic loop or “belt.”

Rub the cotton towel over the surface of the balloon for about 45 seconds.

Laying the plastic loop on a flat surface, rub it with the cotton towel, again for about 45 seconds.

Have a partner hold the end of the balloon. Now hold the plastic loop roughly one foot directly above the balloon (like it’s a hat you’re putting on the balloon). Let go of the loop. The plastic should levitate in the air, repelled by the balloon’s negative charge.